I keep on seeing questions marked as answered within 5-10 minutes of being posted - The trouble with these questions is that very few people have scrutinized the answer for correctness, or possibly a better solution.
[We should] put a short time limit on accepting answers on new questions with few views or votes, or perhaps just an additional confirmation dialog.
We have notifications, so if a new answer is posted, the OP is alerted and they can change their mind, especially if the new answer points out flaws in the accepted answer.
Further, the OP knows best whether the answer worked for them or not. Yes, a better answer may come along later, but that doesn't negate the fact that not only was the accepted answer "good enough" but the person that submitted it delivered it more quickly so the OP could get on with their work.
The effect of preventing or even discouraging people from accepting an answer immediately is going to be overall negative. We've already had to put measures in place to encourage people to accept answers more, and many, many, many comments posted are devoted to asking the OP to accept an answer.
Keep in mind that the community's highest voted answer appears immediately below the accepted answer, and anyone who comes to this question in the future will start at the top, and if the first answer doesn't work, they'll try the second, and so forth until they've resolved their problem.
The system has many measures already to account for poorly chosen accepted answers, and is designed to work despite them.
Lastly, if such a measure is implemented, it might encourage some users to take longer to post their answers. Yes, they may be more finely crafted than a quick and dirty (but correct!) answer, but the OP is left waiting for their answers because some people choose to use this grace period to inflate their chances at getting accepted, rather than posting a good, quick answer.
I do NOT want to, in any way, discourage the quick and dirty answer.
Such a change would have a stronger negative impact on the system than positive.